本文選題：磁流變傳動(dòng) + 磁流變液��； 參考：《中國(guó)礦業(yè)大學(xué)》2017年碩士論文

【摘要】：磁流變傳動(dòng)是一種新型的動(dòng)力傳遞形式,利用磁流變液的流變效應(yīng)傳遞動(dòng)力,可通過調(diào)節(jié)外加磁場(chǎng)的強(qiáng)度改變輸出轉(zhuǎn)矩的大小;磁流變傳動(dòng)裝置是磁流變傳動(dòng)技術(shù)的具體應(yīng)用,與傳統(tǒng)的傳動(dòng)裝置相比具有反應(yīng)迅速可逆、能耗低以及控制簡(jiǎn)單等特點(diǎn),在機(jī)械傳動(dòng)領(lǐng)域有廣闊的應(yīng)用前景。針對(duì)當(dāng)前磁流變傳動(dòng)技術(shù)存在的問題,本文將對(duì)以下幾個(gè)方面的內(nèi)容進(jìn)行研究,以期為磁流變傳動(dòng)技術(shù)向大功率發(fā)展提供支持。根據(jù)磁流變傳動(dòng)的特點(diǎn),提出了一種磁流變傳動(dòng)散熱方案;結(jié)合水冷式磁流變傳動(dòng)裝置的技術(shù)要求,基于電磁學(xué)基本理論,對(duì)傳動(dòng)裝置進(jìn)行了磁路的設(shè)計(jì)與計(jì)算,確定了裝置的總體結(jié)構(gòu)和主要參數(shù),得到了一種水冷式磁流變傳動(dòng)裝置。介紹了電磁場(chǎng)的基本理論和計(jì)算方法,采用有限元分析軟件ANSYS對(duì)傳動(dòng)裝置進(jìn)行磁路仿真,得到不同勵(lì)磁電流下傳動(dòng)裝置磁場(chǎng)的總體分布,并對(duì)工作空間中磁感應(yīng)強(qiáng)度的分布特點(diǎn)以及影響因素進(jìn)行了分析。結(jié)果表明,磁力線基本約束在磁路內(nèi),且工作空間磁感應(yīng)強(qiáng)度分布均勻;當(dāng)電流為2.0A時(shí),工作磁感應(yīng)強(qiáng)度可達(dá)到0.56T,能夠滿足磁路設(shè)計(jì)要求。根據(jù)溫度場(chǎng)計(jì)算方程,利用ANSYS對(duì)水冷式磁流變傳動(dòng)裝置進(jìn)行穩(wěn)態(tài)和瞬態(tài)溫度場(chǎng)仿真;分析了傳動(dòng)裝置的許用滑差功率,并探究了滑差功率和冷卻水的溫度對(duì)磁流變液溫度的影響。結(jié)果表明,在磁流變液適用溫度范圍內(nèi)(-25~130℃),設(shè)計(jì)的水冷式磁流變傳動(dòng)裝置的理論傳遞功率可達(dá)12.5kW;當(dāng)滑差功率為7.5kW,冷卻水溫度為25℃時(shí),磁流變液的最高溫度僅為70℃。以設(shè)計(jì)的水冷式磁流變傳動(dòng)裝置為基礎(chǔ),搭建了水冷式磁流變傳動(dòng)性能實(shí)驗(yàn)臺(tái),開展了磁流變傳動(dòng)裝置的動(dòng)力傳遞、動(dòng)態(tài)響應(yīng)以及溫升特性實(shí)驗(yàn)研究;并探究了磁流變液溫度和散熱方式對(duì)裝置傳遞轉(zhuǎn)矩的影響。結(jié)果表明,采用的水冷散熱方式能夠有效控制傳動(dòng)裝置的溫升。論文最后對(duì)所做的工作進(jìn)行總結(jié),并對(duì)相關(guān)的技術(shù)研究進(jìn)行展望。
[Abstract]:Magnetorheological transmission is a new type of power transmission, which can change the output torque by adjusting the strength of the external magnetic field by using the rheological effect of the magnetorheological fluid, and the magneto-rheological transmission device is the concrete application of the magneto-rheological transmission technology. Compared with the traditional transmission device, it has the characteristics of quick reaction and reversible reaction, low energy consumption and simple control, so it has a broad application prospect in the field of mechanical transmission. In view of the problems existing in the current magnetorheological transmission technology, the following aspects will be studied in this paper, in order to provide support for the development of magneto-rheological transmission technology to high power. According to the characteristics of magnetorheological transmission, a heat dissipation scheme of MRF transmission is put forward, and the magnetic circuit is designed and calculated based on the basic theory of electromagnetism combined with the technical requirements of water-cooled MRF transmission device. The overall structure and main parameters of the device are determined, and a water-cooled magnetorheological transmission device is obtained. The basic theory and calculation method of electromagnetic field are introduced. The magnetic circuit simulation of the transmission device is carried out by using the finite element analysis software ANSYS, and the total magnetic field distribution of the transmission device under different excitation current is obtained. The distribution characteristics and influencing factors of magnetic induction intensity in workspace are analyzed. The results show that the magnetic field line is basically confined in the magnetic circuit, and the magnetic induction intensity in the workspace is uniform, and when the current is 2.0 A, the working magnetic induction intensity can reach 0.56 T, which can meet the design requirements of the magnetic circuit. According to the calculation equation of temperature field, the steady and transient temperature fields of water-cooled magnetorheological transmission are simulated by ANSYS, and the allowable slip power of the transmission is analyzed. The effects of slip power and cooling water temperature on the temperature of magnetorheological fluid were investigated. The results show that the theoretical transfer power of the designed water-cooled MRF can reach 12.5 kW within the suitable temperature range of -25 鈩，

本文編號(hào)：1946006